How long should a differential last?
Most manufacturer maintenance schedules require the differential fluid to be changed every 30,000 to 60,000 miles, however, it can differ between vehicles. The job itself is actually pretty easy, however, if you’re planning to change your vehicle’s differential fluid at home, then it can get messy.
How do you diagnose a bad differential?
One of the most obvious signs is a loud whirring noise that takes place when your vehicle is decelerating. You also may hear a howl or a whine when you are accelerating. This can be symptomatic of a bad differential.
What happens if you don’t change your rear differential fluid?
If this fluid isn’t changed in the manufacturer-prescribed intervals, then it can get dirty and thick, which could damage the differential over time.
Why is my Toyota RAV4 rear differential leaking?
Toyota vehicles experiencing problems with rear differential due to design problem. Mine has both rear seals leaking and will cost hundreds of dollars to repair at Toyota dealership. Breather plug gets clogged and pressure build up causes leaks. If not repaired, differential can potentially cease and cause an accident.
When do rear differentials need to be replaced?
Had rear differential coupler sub assembly replaced under warranty enhancement. Now 20000 miles later in November 2018 have growling noise again and local Toyota dealer says coupler would need to be replaced again. Warranty enhancement expired October 2018.
Why does my rear differential make a noise?
The source of the noise may be a damaged transmission coupling assembly and two ball bearing assemblies. Follow the repair procedure in this TSB to diagnose and repair this condition. Some customers may complain about an abnormal noise from the rear of the vehicle that increases in volume as vehicle speed increases.
Why is my Toyota RAV4 making a growling noise?
While the vehicle was moving a growling/whirring noise started to come from the rear of the vehicle. It increased in frequency and volume over time. After replacing both rear wheel bearings it was determined by a Toyota dealership that the problem was with the rear differential coupler/bearing.